CN202663583U - LED lamp bead protecting circuit - Google Patents
LED lamp bead protecting circuit Download PDFInfo
- Publication number
- CN202663583U CN202663583U CN 201220147968 CN201220147968U CN202663583U CN 202663583 U CN202663583 U CN 202663583U CN 201220147968 CN201220147968 CN 201220147968 CN 201220147968 U CN201220147968 U CN 201220147968U CN 202663583 U CN202663583 U CN 202663583U
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- light
- parallel
- current
- circuit
- voltage stabilizing
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Abstract
The utility model relates to an LED (Light-Emitting Diode) lamp bead protecting circuit, comprising one or more voltage stabilizing didoes, a capacitor, a current-limiting resistor and a power diode, wherein the one voltage stabilizing diode or each of more than one voltage stabilizing didoes is connected in parallel with each of light-emitting diodes connected in series with each other; the capacitor is connected in parallel with the series circuit of the light-emitting diodes and then the parallel circuit is further connected in series with the current-limiting resistor, and further the series circuit is connected in parallel with the power diode. When a corresponding light-emitting diode is damaged to form open circuit, the voltage stabilizing diodes are capable of functioning in current bridging so that other light-emitting diodes continue to emit light; the capacitor is capable of absorbing current impact generated by a power source when being turned on or off so that the current impact generated when the power source is turned on or off may not be applied to the light-emitting diodes, thereby achieving the effect of protecting the light-emitting diodes; and if a reverse current or a directional voltage is applied, the current or the voltage may flow through the power diode so as to protect the light-emitting diodes against the impact of the reverse current.
Description
Technical field
The utility model relates to the LED technical field, especially a kind of LED lamp pearl protective circuit.
Background technology
At present the LED lamp that uses by a plurality of series connection and/light-emitting diode in parallel forms, it has the characteristics such as the electric light transfer ratio is high, and the life-span is long, is the development trend of throwing light on.In the use procedure of producing, transport, live, light-emitting diode reduces the LED life-span very easily by the impact of static, mains switch greatly, causes permanent damage when serious.The Light-Emitting Diode damage can cause two kinds of situations: open circuit or short circuit, and cause whole series connection group not work during open circuit, can cause then during short circuit that other elements also can be damaged on the circuit.
The utility model content
In view of this, being necessary the problem pointed out for background technology provides a kind of useful life of improving light-emitting diode, makes Light-Emitting Diode not be subjected to static, the new-type circuit of the impact of the open and close of power supply.
The purpose of this utility model is achieved through the following technical solutions:
A kind of LED lamp pearl protective circuit, it is applied in the led circuit that the Light-Emitting Diode by a plurality of series connection forms, and it comprises a plurality of voltage stabilizing didoes, a capacitor, a current-limiting resistance and a power diode; Described a plurality of voltage stabilizing didoe respectively with each Light-Emitting Diode reverse parallel connection of mutually connecting, described capacitor is in parallel with the series circuit of described Light-Emitting Diode, this parallel circuits is connected with described current-limiting resistance again, and this series circuit is in parallel with described power diode.
A kind of LED lamp pearl protective circuit; in its led circuit that is applied to be formed by a plurality of Light-Emitting Diodes in parallel in the same way; it comprises a voltage stabilizing didoe, a capacitor, a current-limiting resistance and a power diode; described voltage stabilizing didoe and described capacitor are all in parallel with described Light-Emitting Diode; wherein; described voltage stabilizing didoe and described Light-Emitting Diode reverse parallel connection, this parallel circuits is connected with described current-limiting resistance again, and this series circuit is in parallel with described power diode.
A kind of LED lamp pearl protective circuit, it is applied to by in many groups of a plurality of Light-Emitting Diodes led circuits that series aiding connection forms again in parallel in the same way, and it comprises a plurality of voltage stabilizing didoes, a capacitor, a current-limiting resistance and a power diode; Each voltage stabilizing didoe and one group of a plurality of Light-Emitting Diode reverse parallel connection in parallel in the same way, described capacitor is in parallel with described led circuit, and this parallel circuits is connected with described current-limiting resistance again, and this series circuit is in parallel with described power diode.
With respect to prior art, the utility model has the advantage of:
Voltage stabilizing didoe has been the static electricity discharge effect; exterior static is released by voltage stabilizing didoe; light-emitting diode is played electrostatic protective function; simultaneously; after corresponding light-emitting diode damages open circuit; voltage stabilizing didoe can play the effect of electric current bridge joint, and this series circuit is connected, and allows other light-emitting diodes continue luminous.
The effect of current-limiting resistance and capacitor is to absorb power surge; when opening or closing power supply; power supply can produce a rush of current; a capacitor in parallel plays the effect that Absorption Current impacts again after led circuit is connected described current-limiting resistance; rush of current when making Switching Power Supply can not be applied on the light-emitting diode, thereby plays the effect of protection light-emitting diode.
The effect of power diode is the whole series circuit of protection, and after having reverse current or direction voltage to apply, circuit or voltage can flow by power diode, and the protection light-emitting diode is not subjected to the impact of reverse current.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model embodiment one;
Fig. 2 is the electrical block diagram of the utility model embodiment two.
Embodiment
Embodiment one:
As shown in Figure 1, the LED lamp pearl protective circuit of the present embodiment is applied in the led circuit that the Light-Emitting Diode 10 by a plurality of series connection forms, and it comprises a plurality of voltage stabilizing didoes 20, a capacitor 30, a current-limiting resistance 40 and a power diode 50.
Described a plurality of voltage stabilizing didoe 20 respectively with each Light-Emitting Diode of mutually connecting 10 reverse parallel connection, described capacitor 30 is in parallel with the series circuit of described Light-Emitting Diode 10, this parallel circuits is connected with described current-limiting resistance 40 again, and this series circuit is in parallel with described power diode 50.
Embodiment two:
As shown in Figure 2, in the led circuit that the LED lamp pearl protective circuit of the present embodiment is applied to be comprised of a plurality of Light-Emitting Diodes 100 in parallel in the same way, it comprises a voltage stabilizing didoe 200, a capacitor 300, a current-limiting resistance 400 and a power diode 500.
Described voltage stabilizing didoe 200 and described capacitor 300 are all in parallel with Light-Emitting Diode 10, wherein, described voltage stabilizing didoe 200 and described Light-Emitting Diode 100 reverse parallel connections, this parallel circuits is connected with described current-limiting resistance 400 again, and this series circuit is in parallel with described power diode 500.
Embodiment three:
As shown in Figure 3; the LED lamp pearl protective circuit of the present embodiment is applied to by in many groups of a plurality of Light-Emitting Diodes 1 led circuits that series aiding connection forms again in parallel in the same way, and it comprises a plurality of voltage stabilizing didoes 2, a capacitor 3, a current-limiting resistance 4 and a power diode 5.
Described a plurality of voltage stabilizing didoe 2 is a plurality of Light-Emitting Diodes 1 reverse parallel connections in parallel in the same way with described many groups respectively, described capacitor 3 is in parallel with described led circuit, this parallel circuits is connected with described current-limiting resistance 4 again, and this series circuit is in parallel with described power diode 5.
Among above-mentioned three kinds of embodiment; voltage stabilizing didoe has been the static electricity discharge effect; exterior static is released by voltage stabilizing didoe; light-emitting diode is played electrostatic protective function; simultaneously, after corresponding light-emitting diode damaged open circuit, voltage stabilizing didoe can play the effect of electric current bridge joint; this series circuit is connected, allow other light-emitting diodes continue luminous.
The effect of described current-limiting resistance and described capacitor is to absorb power surge; when opening or closing power supply; power supply can produce a rush of current; a capacitor in parallel plays the effect that Absorption Current impacts again after led circuit is connected described current-limiting resistance; rush of current when making Switching Power Supply can not be applied on the light-emitting diode, thereby plays the effect of protection light-emitting diode.
The effect of described power diode is the whole series circuit of protection, and after having reverse current or direction voltage to apply, circuit or voltage can flow by power diode, and the protection light-emitting diode is not subjected to the impact of reverse current.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (3)
1. LED lamp pearl protective circuit, it is applied to it is characterized in that in the led circuit that the Light-Emitting Diode by a plurality of series connection forms, comprises a plurality of voltage stabilizing didoes, a capacitor, a current-limiting resistance and a power diode; Described a plurality of voltage stabilizing didoe respectively with each Light-Emitting Diode reverse parallel connection of mutually connecting, described capacitor is in parallel with the series circuit of described Light-Emitting Diode, this parallel circuits is connected with described current-limiting resistance again, and this series circuit is in parallel with described power diode.
2. LED lamp pearl protective circuit; in its led circuit that is applied to be formed by a plurality of Light-Emitting Diodes in parallel in the same way; it is characterized in that; it comprises a voltage stabilizing didoe, a capacitor, a current-limiting resistance and a power diode; described voltage stabilizing didoe and described capacitor are all in parallel with described Light-Emitting Diode, wherein, and described voltage stabilizing didoe and described Light-Emitting Diode reverse parallel connection; this parallel circuits is connected with described current-limiting resistance again, and this series circuit is in parallel with described power diode.
3. LED lamp pearl protective circuit, it is applied to it is characterized in that by in many groups of a plurality of Light-Emitting Diodes led circuits that series aiding connection forms again in parallel in the same way, it comprises a plurality of voltage stabilizing didoes, a capacitor, a current-limiting resistance and a power diode; Each voltage stabilizing didoe and one group of a plurality of Light-Emitting Diode reverse parallel connection in parallel in the same way, described capacitor is in parallel with described led circuit, and this parallel circuits is connected with described current-limiting resistance again, and this series circuit is in parallel with described power diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220147968 CN202663583U (en) | 2012-04-10 | 2012-04-10 | LED lamp bead protecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220147968 CN202663583U (en) | 2012-04-10 | 2012-04-10 | LED lamp bead protecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202663583U true CN202663583U (en) | 2013-01-09 |
Family
ID=47458451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220147968 Expired - Fee Related CN202663583U (en) | 2012-04-10 | 2012-04-10 | LED lamp bead protecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202663583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107650782A (en) * | 2017-07-31 | 2018-02-02 | 芜湖宏景电子股份有限公司 | Car multimedia button lampet stabilizing circuit |
-
2012
- 2012-04-10 CN CN 201220147968 patent/CN202663583U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107650782A (en) * | 2017-07-31 | 2018-02-02 | 芜湖宏景电子股份有限公司 | Car multimedia button lampet stabilizing circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130410 |